Film-aligning device for air cushion maker

Abstract

A film-aligning device applicable to an air cushion maker implements an eclectic heater to partially heat and soften a plastic film before the plastic film receives an inflating process and a softening process. When the plastic film is tending to proceed slantingly, the heated and soften plastic film performs a plastic deformation to realign the feeding stork of the plastic film.

Description

BACKGROUND OF THE INVENTION[0001]1. Technical Field[0002]The present invention relates to air cushion makers, and more particularly, to a film-aligning device for aligning a plastic film during a feeding stork, so as to ensure smooth inflating and sealing processes.[0003]2. Description of Related Art[0004]For protecting packed objects from being damaged under accidental impact, buffer or cushion materials are generally used to fill void. As can be seen in FIG. 1, an air-bubble sheet made of plastic films is one of the most poplar cushion materials. A manufacture employs special equipments to produce such air-bubble sheet as a large piece, and a user can later cut or pucker the sheet at will to fill void in a packing case. However, the manufactured air-bubble sheet is space-consuming at transportation and storage due to its characters of being inflated and non-compressible. Thus, such air-bubble sheet is uneconomic and inconvenient in respect of transportation and storage.[0005]A des...

AI Technical Summary

Benefits of technology

[0007]To achieve this and other objectives of the present invention, the film-aligning device comprises a plastic film roll rotatably mounted on a base of a desk-top air cushion maker, a plurality of film-pulling roller sets, a heater settled on the base. The heater provides a heating temperature ranging from 55 to 60 Centigrade degrees. The heater is positioned between the plastic film roll and the film-pulling roller sets that continuously draw out a plastic film from the plastic film roll. Thereby, the plastic film over the heater is heated and softened. In the event that the film is tending to become slant, two sides of the film receive different magnitudes of pulling force from the film-pulling roller set. At this time, the side receiving the relatively great pulling force becomes taut and the other side receiving the relatively small pulling force becomes loose, so that the film crossing over the heater performs plastic deformation that stops the uneven pulling force being transmitted toward the plastic film roll. As a result, the film between the plastic film roll and the heater is protected from receiving the uneven pulling force and kept aligned, thereby rectifying the film stroke from slanting and ensuring the following film proceeding straightly.

Problems solved by technology

However, the manufactured air-bubble sheet is space-consuming at transportation and storage due to its characters of being inflated and non-compressible.

Thus, such air-bubble sheet is uneconomic and inconvenient in respect of transportation and storage.

Nevertheless, a conventional desk-top air cushion maker typically suffer from slant film in the maker that tends to cause creases on the film and leads to defective inflating and sealing processes.

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